I developed the electronics for a wearable Haptic Band device for blind people, created and patented by MOV Designs. In this role, I successfully designed, tested, and validated a high-efficiency, lightweight, and compact 6-layer PCB with 0402 passive component footprints. This was my first (and successful) experience with such small electronics developments!.

I achieved a device autonomy of 10 hours with a total gross weight of only 50g (aprox). Including its integrated lithium battery.

If you’d like to learn more about this exiting product, I encourage you to visit the website of MOV Designs, a startup based in Talca, Chile.

March 2025

Portable datalogger with RF functions for scientific pruposes. Implemented at Andes Mountains and Patagonia at Chile, Antarctica and Southern Alphs in New Zealand. It is a low power consumption device, reprogramable and easy to integrate with different kind of sensors / actuators.

• ESP32 based (built -in WiFi and BLE).

• 1- Gigabit Flash memmory.

• GNSS receiver.

• LoRa at 915MHz transceiver.

• RS-485 driver.

• USB - CDC for programming and HMI.

• Internal temperature and Voltmeter built-in.

• Hall sensor.

• Power switch-Controlled (by firmware) power terminal.

•  4 programable GPIO terminals.

Year 2024

• Air temperature instrument with integration of DS18B20 digital temperature sensor.

• Snow height measurement with Lidar Lite V3 sensor integration.

• Shield designed and printed in 3D with white painted PLA.

• RS-485 communication interface for easy integration with different systems.

• Low power consumption between samples.

Year 2023

Portable snow scale for Snow Water Equivalence (SWE) estimations.

• Up to 80Kg

• Easy to resize.

• Low power consumption between samples.

• Internal temperature sensor for temperature drift compensation.

• Digital communication over serial RS-485.

Year 2023

• Connection to IoT SWARM satellite network (currently obsolete).

• Serial (TTL / RS-232 / RS-485 / USB) communication.

• USB by-pass for standalone module firmware upload.

• Power supply and SWARM module mannagement.

Year 2023

Open-source Arduino derivative datalogger for scientists. Bluit-in typical integrations for low-cost dataloging applications:

• Atmega2560 MCU.

• RTCC

• microSD socket + 1 Gbit flash memory.

• USB - CDC interface for programming and HMI.

• Solar charger regulator for SLA 12V battery.

• GNSS receiver.

• LoRa 433MHz transceiver. 

• Protoboard for generic integrations

• Stacable and modular system, for easy fix within a 70mm PVC sanitary pipe.

• Documentation git Link

Year 2020

• 4-segments capacitive soil moisture sensor.

• Low power consumption.

• RS-485 and analog interface.

Year 2020

• Built-in microSD socket, flash memory and RTC oscilator.

• Power by USB or 3.7 lithium battery.

Year 2021

• Low power consumption.

• Comumnication over RS-485.

• range: 750nm~1100nm

Year 2022

• Vin: 7Vdc to 28Vdc.

• Vout: 3.3Vdc fixed.

• Iout-max: 3A.

• EMI shiled.

• Low quiescent current.

• on-off controller pin. Normally on.

• Ready to integrate on different PCB's.

• Inverse polarization protection.

Year 2022

• Integration with Rogowski coils for AC current measurements.

• Situable for 3-phase electric transformers.

• Backup battery.

• Integrated with GPRS modem.

• Capable to measure up-to 50 harmonics of current and voltage per phase.

• Transmit data every 10 minutes and when a programed event is triggered.

Year 2016

• Undergraduate final work. more details here (in spanish).

• Capacitive sensors.

• 20 registers per second.

• Internal oversampling at 200 samples/second.

• HMI software developed in Python.

• Calibration module by the user.

Year 2014

• Built-in I2C Temperature / relative humidity sensor.

• Works with a single CR2032 battery.

• Buit-in 7 segment LED display.

• Reprogramable

Year 2022

• Preamp stage with 12AX7 vacum tube.

• Poweramp stage with TDA2003 integrated circuit.

• Hobbyst development.

Year 2013

• Based on mutron III by musictronics.

• New power supply to only single 9V instead of original +-9V

• New output volume control.

• True By-pass.

• New Fx- Send and Fx-Return Jacks.

• Hobbyst development.

Year 2022